发明授权
- 专利标题: THERMOPLASTIC POLYCARBONATE COMPOSITIONS HAVING HIGH TOUGHNESS
- 专利标题(中): 具有高韧性热塑性聚碳酸酯组合物
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申请号: EP03763116.5申请日: 2003-07-07
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公开(公告)号: EP1521806B1公开(公告)日: 2008-01-09
- 发明人: CHUNG, James, Y., J. , PAUL, Winfried, G. , ERKELENZ, Michael , MOETHRATH, Melanie , HORN, Klaus
- 申请人: Bayer MaterialScience LLC , Bayer MaterialScience AG
- 申请人地址: 100 Bayer Road Pittsburgh, PA 15205-9741 US
- 专利权人: Bayer MaterialScience LLC,Bayer MaterialScience AG
- 当前专利权人: Bayer MaterialScience LLC,Bayer MaterialScience AG
- 当前专利权人地址: 100 Bayer Road Pittsburgh, PA 15205-9741 US
- 代理机构: Klimiuk, Meike
- 优先权: US191583 20020709
- 国际公布: WO2004005401 20040115
- 主分类号: C08L69/00
- IPC分类号: C08L69/00 ; C08G64/04 ; C08G64/06 ; C08G64/18 ; C08G64/30
摘要:
A thermoplastic molding composition that features improved low-temperature properties and is thus suitable for application in exterior automotive parts is disclosed. The composition contains (A) 80 to 60 percent of a copolycarbonate wherein 65 to 75 mole percent of its structural units are derived from compounds of formula (I) wherein R1, R2, R3 and R4 independently of one another represents H, C1-C4-alkyl, phenyl, substituted phenyl or halogen, and wherein 25 to 35 mole percent of its structural units are derived from compounds of formula (II) where R5, R6, R7, and R8 independently one of the others denote H, CH3, Cl or Br and X is C1-C5-alkylene, C2-C5-alkylidene, C5-C6-cycloalkylene, C5-C10-cycloalkylidene and (B) 20 to 40 percent of a homopolycarbonate of bisphenol A having a melt flow rate, determined in accordance with ASTM D-1238 under 1.2 kg loading at 300 °C of 3 to 12 gm/10 minutes.
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